FR631946A
(en )
1927-12-29
Method and device for preventing corrosion of metals
FR577270A
(en )
1924-09-03
Method for launching metal bridges and device for implementing the method
FR646721A
(en )
1928-11-15
Method and devices for the clarification of benzine
CH131700A
(en )
1929-02-28
Television method and device for implementing this method.
CH85516A
(en )
1920-06-16
Method for ventilating a closed room and device for implementing this method.
FR614342A
(en )
1926-12-11
Mobile advertising method and overall device for implementing this method
FR571001A
(en )
1924-05-10
Economical welding process and device for implementing this process
FR578335A
(en )
1924-09-23
Underwater signaling method and device for implementing this method
FR619284A
(en )
1927-03-30
Method and device for the production of lamellar metallic deposits
FR716299A
(en )
1931-12-17
Method for destroying all airborne parasites and device for implementing this method
FR782161A
(en )
1935-05-31
Currency verification method and installation for implementing the method
FR556228A
(en )
1923-07-13
Method and device for preventing shocks produced on cars by unevenness of the road
FR724029A
(en )
1932-04-19
Method and device for the construction of cast ceilings, especially plaster ceilings
FR577506A
(en )
1924-09-06
Method and device for friction tests
FR760426A
(en )
1934-02-22
Handwriting transcription method and device for implementing this method
FR610758A
(en )
1926-09-13
Device and method for securing the cargoes of ships
DK40112C
(en )
1929-05-06
Method and apparatus for electrolytic precipitation of metal on metal pipes.
FR609742A
(en )
1926-08-20
Lockstitch forming method and device for carrying out this method
FR685872A
(en )
1930-07-18
Method and device for melting scrap metal
FR640903A
(en )
1928-07-24
Method and device for determining the composition of brass
FR629813A
(en )
1927-11-17
Method and device for the manufacture of boxes
DK34544C
(en )
1925-05-25
Apparatus for Indicating the Direction and Stopping of Automobiles.
FR610229A
(en )
1926-09-01
Method and apparatus for determining the direction of a t transmitting station. s. f.
FR642354A
(en )
1928-08-28
Method and device for casting metals
FR592045A
(en )
1925-07-22
Method for the implementation of electrothermal processes